The Sennheiser EW135 G3 GB Vocal System offers versatility for every style of music as well as presentations.

The handheld microphone now allows you to charge the optional rechargeable pack while it remains in the transmitter. Wirelessly link up the transmitter with the receiver with a single touch of the sync button. The true diversity receiver has a backlit graphic display that makes it easy to read under all lighting conditions.

With 1680 tunable frequencies, the EW135 system is a great all in one package for small venues, conferences and Houses of Workship.

For more information on Sennheiser wireless, please contact a member of our AC Audio team.

Handheld transmitter with easy-exchangeable microphone modules from evolution series

Integrated Equalizer and Soundcheck mode

Contacts for recharging BA 2015 accupack directly in the transmitter

Wide range of accessories adapts the system to any requirement

Information Resource
and FAQ's - Wireless Microphone Frequency Guide

There have been many
questions surrounding the 2012 digital switchover and its effect on Wireless
Microphone Frequencies across the UK. To help clarify some frequently
asked questions, A.C. Audio have put together a source of reference with the
current plans from Ofcom.

If you have any queries
about these upcoming implementations, we are on hand to discuss your individual
circumstances and will be a source of unbiased advice. As a distributor for all
major wireless equipment brands, we will endeavour to advise the best course of
action that will ensure minimal disruption during the digital switchover.

Which frequency ranges
have been affected?

Frequencies 854-862 MHz
(TV channel 69) has been allocated elsewhere, making the use of radio mics and
wireless systems illegal to use on this frequency.

Which frequency range
is free to run wireless systems on?

Frequency band 863-865
MHz (Channel 70) is deregulated and does not require a license. If you plan on
running more than four wireless systems at one time it’s recommended you use
frequency band 606-614 MHz (Channel 38) which will require a license.

Are there any other
possible frequency bands?

470-550 MHz (TV
channels 21 to 30) and 614-790 MHz (TV channels 39 to 60) will be available for
wireless microphones on a secondary use with Digital Terrestrial Television
(DTT) and on a license basis (called: "interleaved spectrum: spectrum
between TV transmitters that cover only regions").

The VHF band 174-216 is
not yet affected by the Digital Dividend, and there is some interleaved VHF
spectrum availability. There are three frequencies within the VHF that can be
used license free - 173,800 MHz, 174,500 MHz and 175.000 MHz.

Because the new IMT
services use an up and down link and these need to be separated to overcome
interference, the band 790-862 MHz will be split in 2 parts of 30 MHz. In the
middle will be a "Duplex Centre Gap" running from 821-832 MHz. There
is a possibility that this gap will become available for wireless microphones
in the future. However, with current technology and the noise created in this
band by the IMT service, we would question its suitability for wireless
microphones at this time. It is anticipated that only 3-4 MHz in the middle of
the gap will be usable. This band is under investigation on European and
national levels.

In the 1.8GHz band
(1785-1800 MHz) Ofcom grants access for digital wireless microphones only. This
frequency range is not really suited for wireless microphones, as the higher
frequencies (i.e. shorter wavelengths) create more body absorption and shadow
effects due to the directivity, etc. The use of these frequencies will only
work adequately when there is a line of sight and a short distance between the
transmitter and the receiver.

How about licenses and
license fees?

The Joint Frequency
Management Group (JFMG) is the UK's band manager for the Program
Making and Special Events (PMSE) industry. For further licensing details please
contact JFMG atwww.jfmg.co.uk.

Is it possible to modify current wireless microphones to other
frequency ranges?

Yes in many instances,
but this is dependant on the make and model and in some circumstances it may be
more economical to purchase a new system.

Does Ofcom compensate equipment becoming redundant as a result of
these plans?

Yes, some funding is
available to cover the movement of equipment out of TV channel 69 towards TV
channel 38. On August 14, 2009 Ofcom published a consultation document on
eligibility criteria, we recommend users to read this consultationwww.ofcom.org.uk/consult/condocs/pmse_funding/.

Where can I find more detailed information on available
frequencies?

Please contact A.C.
Audio for more information or alternatively the British Entertainment Industry
Radio Group (BEIRG) provides a lot of information and makes a great effort to
preserve the spectrum for our industry. See www.beirg.co.uk.

With years of experience supplying Businesses, Government Organisations, Charities, Schools, Colleges and Universities, we invite you to take advantage of our knowledge to help you make an informed choice, ensuring you are purchasing the best music products for your needs. With specialists in PA Systems, Pro Audio & Live Sound equipment on hand to answer calls and emails, you're in the best possible hands.

Contact us now to discuss your requirements or to request a quotation. Additional discounts may apply for educational establishments or size and value of order.